Drainage device for annular water collecting tank of blast furnace shell

Abstract

The utility model discloses a blast furnace shell annular water collecting tank drainage device, belongs to the technical field of blast furnace drainage, and solves the problem that the existing blast furnace drainage device is inconvenient to disassemble, assemble and maintain. The device comprises a water collecting tank, one side of the bottom of the water collecting tank is communicated with a plurality of return pipes, the return pipes are jointly communicated with a drainage pipe, the drainage pipe is communicated with a drainage well, the water collecting tank is a U-shaped tank with an opening in the top, and the periphery of the blast furnace is sleeved with the water collecting tank in a sliding mode. The water collecting tank comprises two half-and-half arc-shaped water tanks, one ends of the two arc-shaped water tanks are hinged, the other ends of the two arc-shaped water tanks are both provided with connecting plates which are arranged in the radial direction, and the two connecting plates are connected through a bolt and nut assembly; the backflow pipe comprises an L-shaped pipe and a connecting pipe, one end of the L-shaped pipe is communicated with the water collecting tank, and the other end of the L-shaped pipe is inserted into the connecting pipe in a sliding mode. The annular water collecting tank drainage device for the blast furnace shell realizes safe drainage, is convenient to disassemble, assemble and maintain, and effectively reduces the maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace drainage, and more specifically, to a blast furnace shell annular water collecting trough drainage device. Background Art

[0002] When the blast furnace is in normal production, it is necessary to open the water valve to measure the water temperature difference at the iron mouth to drain water, or the furnace shell temperature rises abnormally and needs water cooling. The original drainage device directly flows water into the surrounding of the furnace base and discharges it through the ditch. Due to the uneven surface platform of the furnace base, there are many water accumulation areas. When the furnace cylinder and the main ditch are burned through, the slag iron will encounter water and produce steam explosion, which is not safe to use.

[0003] After searching the prior art, the existing patent number is: CN105838832B, which discloses a blast furnace water supply and drainage exhaust system. It mainly aims at the problem of unsmooth exhaust of the exhaust system under the prior art, and proposes a blast furnace water supply and drainage exhaust system, including a furnace body drainage trough, a drainage pipe, a degassing tank, an exhaust pipe and a spray drainage trough; wherein the degassing tank is vertically arranged; the drainage pipe includes a vertical pipe, a U-shaped pipe and a degassing pipe, the upper end of the vertical pipe is connected to the furnace body drainage trough, the lower end of the vertical pipe is connected to one of the vertical sections of the U-shaped pipe, the other vertical section of the U-shaped pipe is connected to the bottom of the degassing tank, one end of the degassing pipe is connected to the lower part of the degassing tank, and the other end of the degassing pipe is connected to the drainage main pipe; the exhaust pipe at least includes a main exhaust pipe, one end of the main exhaust pipe is connected to the top of the degassing tank, and the other end of the main exhaust pipe is connected to the spray drainage trough. The present invention has a simple structure, smooth drainage and exhaust, and makes full use of the facilities in the system.

[0004] The above existing blast furnace drainage device has high safety, but the water collecting tank is fixed on the blast furnace, which is very inconvenient to disassemble and maintain. Therefore, it is urgent to design a new type of blast furnace shell ring-type water collecting tank drainage device to solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a blast furnace shell annular water collecting trough drainage device for the above-mentioned deficiencies of the prior art, which can achieve safe drainage and facilitate disassembly and maintenance, thereby effectively reducing maintenance costs.

[0006] The technical solution of the utility model is as follows: a blast furnace shell annular water collecting trough drainage device, including a water collecting trough, a bottom side of the water collecting trough is connected with a plurality of return pipes, the plurality of return pipes are commonly connected with a drainage pipe, the drainage pipe is connected with a drainage well, the water collecting trough is a U-shaped trough with an opening on the top, the water collecting trough is slidably sleeved on the periphery of the blast furnace, the water collecting trough includes two half-type arcuate water troughs, one end of the two arcuate water troughs is hingedly connected, and the other end is provided with a radially arranged connecting plate, and the two connecting plates are connected by a bolt and nut assembly; the return pipe includes a split L-shaped pipe and a connecting pipe, one end of the L-shaped pipe is connected with the water collecting trough, and the other end is slidably inserted in the connecting pipe, and the connecting pipe is connected with the drainage pipe.

[0007] As a further improvement, a sealing ring is provided between the water collecting tank and the blast furnace.

[0008] Furthermore, a plurality of support platforms are provided on the blast furnace below the water collecting tank, and the water collecting tank is placed on the support platforms.

[0009] Furthermore, a magnet ring is movably placed at the bottom of the water collecting tank.

[0010] Furthermore, a slot is provided on the top of the water collecting tank, and a filter is movably placed in the slot.

[0011] Furthermore, the inner diameter of the connecting pipe is larger than the inner diameter of the L-shaped pipe.

[0012] Furthermore, the bottom surface of the water collecting trough is a slope inclined toward the outside.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses a blast furnace shell annular water collecting trough drainage device, which uses two half-arc water troughs as water collecting troughs by slidingly arranging them on the periphery of the blast furnace. When draining water, water flows downward from the outer wall of the blast furnace and collects in the water collecting trough, and then is discharged into the drainage well through the reflux pipe and the drainage pipe, thereby realizing safe drainage. When disassembling and maintaining, the bolt and nut assembly is loosened, and the whole water collecting trough is pushed upward, so that the L-shaped pipe is separated from the connecting pipe. At this time, the two arc water troughs can be opened, and the whole water collecting trough can be removed from the blast furnace, which is convenient for disassembling and maintaining, and effectively reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0018] Figure 3 It is a schematic diagram of the main partial structure of the utility model;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0020] Among them: 1-water collecting trough, 2-reflux pipe, 3-drainage pipe, 4-drainage well, 5-blast furnace, 6-arc water trough, 7-connecting plate, 8-bolt and nut assembly, 9-sealing ring, 10-support platform, 11-magnet ring, 12-card slot, 13-filter, 21-L-shaped pipe, 22-connecting pipe. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See also Figure 1-4 The utility model discloses a blast furnace shell annular water collection trough drainage device, comprising a water collection trough 1, a plurality of return pipes 2 are connected to one side of the bottom of the water collection trough 1, a plurality of return pipes 2 are connected to a drainage pipe 3, the drainage pipe 3 is connected to a drainage well 4, the return pipe 2 and the drainage pipe 3 are both high temperature resistant steel pipes to meet the high temperature drainage of the blast furnace, wherein the water collection trough 1 is a U-shaped trough with an opening at the top, which can be used to collect water, the water collection trough 1 is slidably sleeved on the periphery of the blast furnace 5, and is convenient for disassembly, the water collection trough 1 comprises two half-type arc-shaped water troughs 6, the two arc-shaped water One end of the groove 6 is hingedly connected, and the other end is provided with a radially arranged connecting plate 7. The two connecting plates 7 are connected by a bolt and nut assembly 8. Specifically, the bolts pass through the two connecting plates 7 and are connected with the nuts, so that the two arc-shaped water grooves 6 can be connected together and covered on the outer wall of the blast furnace 5; the reflux pipe 2 includes a split L-shaped pipe 21 and a connecting pipe 22. One end of the L-shaped pipe 21 is connected to the water collecting tank 1, and the other end is slidably inserted in the connecting pipe 22, so that the L-shaped pipe 21 can slide up and down relative to the connecting pipe 22, and the connecting pipe 22 is connected to the drain pipe 3.

[0023] The utility model discloses a blast furnace shell annular water collecting trough drainage device, which uses two half-arc water troughs 6 as a water collecting trough 1 by slidingly setting two half-arc water troughs 6 on the periphery of the blast furnace 5. When draining water, water flows downward from the outer wall of the blast furnace 5, collects in the water collecting trough 1, and then is discharged into the drainage well 4 through the reflux pipe 2 and the drainage pipe 3, so as to realize safe drainage. When disassembling and maintaining, the bolt and nut assembly 8 is loosened, and the whole water collecting trough 1 is pushed upward, so that the L-shaped pipe 21 is separated from the connecting pipe 22. At this time, the two arc water troughs 6 can be opened, and the whole water collecting trough 1 can be removed from the blast furnace 5, which is convenient for disassembly and maintenance, and effectively reduces the maintenance cost.

[0024] Preferably, a sealing ring 9 is provided between the water collecting tank 1 and the blast furnace 5 to prevent water from leaking from the gap between the blast furnace and the water collecting tank 1 .

[0025] Preferably, a plurality of support platforms 10 are provided on the blast furnace 5 below the water collecting tank 1, wherein the water collecting tank 1 is placed on the support platforms 10, which can support the water collecting tank 1 when the water collecting tank 1 is installed, and can also prevent the water collecting tank from slipping when water accumulates.

[0026] Preferably, a magnet ring 11 is movably placed at the bottom of the sump 1 to absorb some iron filings that have fallen off to prevent clogging of the return pipe 2 and the drain pipe 3, and the magnet ring 11 is a detachable structure for easy cleaning.

[0027] Preferably, a slot 12 is provided at the top of the water collecting tank 1, and a filter screen 13 is movably placed in the slot 12 to prevent some debris from falling into the water collecting tank 1 and then flowing into the return pipe and the drain pipe to cause blockage.

[0028] Preferably, the inner diameter of the connecting tube 22 is larger than the inner diameter of the L-shaped tube 21 , so as to facilitate the removal of the L-shaped tube 21 .

[0029] Preferably, the bottom surface of the water collecting tank 1 is an inclined surface inclined outward to facilitate water to flow into the return pipe 21.

[0030] The above is only a preferred embodiment of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A blast furnace shell annular sump drainage device, comprising a sump (1), wherein one side of the bottom of the sump (1) is connected to a plurality of return pipes (2), wherein the plurality of return pipes (2) are commonly connected to a drainage pipe (3), wherein the drainage pipe (3) is connected to a drainage well (4), wherein: The water collecting trough (1) is a U-shaped trough with an opening at the top. The water collecting trough (1) is slidably mounted on the periphery of the blast furnace (5). The water collecting trough (1) comprises two half-shaped arc-shaped water troughs (6). One end of the two arc-shaped water troughs (6) is hingedly connected, and the other end is provided with a radially arranged connecting plate (7). The two connecting plates (7) are connected by a bolt and nut assembly (8); the return pipe (2) comprises a split L-shaped pipe (21) and a connecting pipe (22). One end of the L-shaped pipe (21) is connected to the water collecting trough (1), and the other end is slidably inserted in the connecting pipe (22). The connecting pipe (22) is connected to the drain pipe (3).

2. A blast furnace shell annular sump drainage device according to claim 1, characterized in that: A sealing ring (9) is provided between the water collecting tank (1) and the blast furnace (5).

3. A blast furnace shell annular sump drainage device according to claim 1, characterized in that: A plurality of support platforms (10) are provided on the blast furnace (5) below the water collecting tank (1), and the water collecting tank (1) is placed on the support platforms (10).

4. A blast furnace shell annular sump drainage device according to claim 1, characterized in that: A magnet ring (11) is movably placed at the bottom of the water collecting tank (1).

5. The blast furnace shell annular sump drainage device according to claim 1, characterized in that: The top of the water collecting tank (1) is provided with a slot (12), and a filter screen (13) is movably placed in the slot (12).

6. A blast furnace shell annular sump drainage device according to any one of claims 1 to 5, characterized in that: The inner diameter of the connecting tube (22) is greater than the inner diameter of the L-shaped tube (21).

7. A blast furnace shell annular sump drainage device according to claim 6, characterized in that: The bottom surface of the water collecting tank (1) is a sloped surface inclined toward the outside.

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